DAC connection issue with Informatica (obiee 7.9.4)

Informatica is running without any issues. Successfully restored the repository, make sure to configure the repository server in workflow manager as well. Successfully tested 'Physical Data Sources' with out any issues. Successfully validate the DAC connection to Informatica rep server.
Problem: When I am testing my testing my informatica connections from DAC client from tab "Informatica Server" I am failing in both the connection
Whenk I test: my Informatica Server I am getting error "

P.S: DAC and OLAP repositories have created and loaded without any issues. I am stuck here where I need to make sure DAC can talk to Informatica but failing.
Our initial installation was in RedHat Linux 4.5 and have faced the same issues there, and then we went ahead and install the OBIEE and Informatica on Windows 2003 environment and facing exactly the same issue. We will appreciate your prompt response.